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Finding the Fourth Proportional to 97,729.40, 146,375.40 and 84,607.40

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Solution

The fourth proportional to 97,729.40, 146,375.40 and 84,607.40 is: 126,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,729.40 : 146,375.40 = 84,607.40 : x
  2. Step 2: Convert to fraction form
    97,729.40/146,375.40 = 84,607.40/x
  3. Step 3: Cross multiply
    97,729.40x = 146,375.40 × 84,607.40
  4. Step 4: Simplify right side
    97,729.40x = 12,384,442,017.96
  5. Step 5: Solve for x
    x = 12,384,442,017.96/97,729.40
  6. Step 6: Final answer
    x = 126,721.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.